diff --git a/jedi/mixin/builtins.pym b/jedi/mixin/builtins.pym
index b8ff20b4..d8f45f82 100644
--- a/jedi/mixin/builtins.pym
+++ b/jedi/mixin/builtins.pym
@@ -26,6 +26,13 @@ def range(start, stop=None, step=1):
     return [0]
 
 
+class file():
+    def __iter__(self):
+        yield ''
+    def next(self):
+        return ''
+
+
 class xrange():
     # Attention: this function doesn't exist in Py3k (there it is range).
     def __iter__(self):
diff --git a/test/completion/std.py b/test/completion/std.py
index 92637322..67528741 100644
--- a/test/completion/std.py
+++ b/test/completion/std.py
@@ -13,6 +13,9 @@ sorted(arr)[0]
 #? str()
 next(reversed(arr))
 
+#? str()
+next(open(''))
+
 # -----------------
 # re
 # -----------------